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A. N. ALLEN & R. H. DEWEY.

Improvement in Lubfica tors for Steam'Engines.

- Patented Jan 28,, 1872;

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"STATES PATENT l Qrrrcn- I IMP OVEMENT m UBRICATO sFoR STEAM-ENGINES.

' .Specifica'tion' forming part of I le'tters Patent'No. l22,982, dated January 23, 1872.

To all whom it may concern: Be it known that we, ALMON N. ALLEN and RODNEY H, DEWEY, of Pittsfield,in the county of Berkshire and "State of Massachusetts,

have invented a new and Improved Lubricator for Steam-Engines; and we do hereby declare View of the sam e, showing the lubricating-pump in position toinje'ct oil into the valve-chest.

.Similar letters indicate corresponding parts. This invention consists in the arrangement of a pump which connects by means of a valve with an oil-cup; and by anothervalve with the steam-chest of an engine, while the pump-piston receives its 'motion from the valve-rod orirom the same source which imparts motion to the, valve-rod, in such a manner that when.

ever the steam-valve is inlnotion the pump, piston alternately draws oil from the oil-cup into the pump-barrel and then 'forces thisoil into the valve-chest, and by these means a proper quantity oflubricating material is applied to the steam-valve, andat the same time no lnbricating material is wasted. g e In the. drawingfthe letter A' designates. a steam-cylinder, which is provided with a steamchest," B, in which works the slide-valve 0, motion being imparted to this slide-valve by means of a rod, D, from an eccentric on the crank shaft, orin any other well-known manner! E is a pump barrel, which may be fastened to the valve-chest in any desired position by any suitable, means. This pump-barrel connects through a yalve, a, with an oil-cup, F aud through a valve, b, with a pipe,-Gr, that extends into the. steam-chest, as shown. The

valve a opens inward, and the valve b outward from the pmcpbarrel, and this barrel Q moves a piston, H-, the rod Iof which connects by an arm, 'J, with the valve-rod D, or this piston-rodmay be connected directly to the eccentric or other mechanism, imparting motion I to the slide-valve. When the pistonH in the pump-barrel moves in the direction of arrow l't-he valve to opensand the valve 1) closes, and

a quantity of oil drawn from the oil-cup into the pump-barrel. in the direction of thearrow 2 the valve a When the piston H moves closes and the valve b opens, and the oil previously sucked into the pump-barrel is forced through the pipe G into the valve-chest.

If desired an oil-cup may be made to connect with the pump-barrel'at either end, and the pump-barrel maybe connected at both ends with the valve-chest, and in most cases this arrangement will be preferable in order to keep up a uniform supply of lubricating materialto both ends of the valve-chest, and'also to keep the valve evenly balanced. It will also be.

readily understood that by suitable mechan- 'isn1 the'motion of the pumppiston may be regulated so that'no more oil is thrown into i the valve-chest than necessary to keepthey steam-valve properly lubricated. 7 .By our devicethe requisite quantity of oi for the lubrication of the steam-valve is inject,

ed into the valve-chest whenever the steamvalve is in emotion, and when the valve is at rest'th'e supply of oil stops, and no lubricating material is wasted.

- What we claim asnew, and desire-to secure by Letters Pat ent, is' The,"arrangement of a. pump the piston oi which receives its motion fromthe rod of the slide valve; or from the same source which imparts motion to said slide-valve,said pump be ing-connected with an; oil-cup and'with a pipe or channel leading to the steam-chest, sub.

stantiallyin the manner herein shown and described.

' ALMON N. ALLEN. r RODNEY H: DEWEY,

Witnesses: I

MYRON J. HORTON, Dwrenr Gnnsrnn; 

